16561988

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{659}}^1$

素因数の和:827

約数の個数: 24

約数和(自身を含む): 29789760

約数和(自身を除く): 13227772

約数列:

[1, 2, 4, 61, 103, 122, 206, 244, 412, 659, 1318, 2636, 6283, 12566, 25132, 40199, 67877, 80398, 135754, 160796, 271508, 4140497, 8280994, 16561988]

約数ペア:

[(1, 16561988), (2, 8280994), (4, 4140497), (61, 271508), (103, 160796), (122, 135754), (206, 80398), (244, 67877), (412, 40199), (659, 25132), (1318, 12566), (2636, 6283)]